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57.99
  • Red/Green Dot
  • For 20mm Rails
  • Aluminium Made

This is an Aluminium-constructed Red Dot Sight for Airsoft Guns, that is attached to 20mm RIS/RAS via the Integrated Mount. If you want a more effective aim-point for your replica, that is ready to go out of the box, then the Theta Optics Red Dot Reflex Sight is a strong choice.

69.99
  • Amazing Value
  • Illuminated Reticule
  • Mount Rings Included

Never before has such an incredible Scope been available at such an affordable price! This Riflescope has a tremendous zoom, reaching out from 2.5x to 10x Magnification, has an Illuminated Reticule with the choice of Red/Green/Blue, comes included with Scope Mount Rings, has adjustable Focus as well as a Parallax Control. This is without a doubt the greatest value for money Airsoft Scope that money can buy right now! Whether you're new to Sniping or just want to treat yourself to something a little nicer... quality doesn't have to cost.

5.99
  • For 25mm Optics
  • Slim Profile Rings
  • High Profile Mounts

A set of two High Profile Scope Mount Rings, which will accept a 25mm Optic and easily install to 20mm RIS/RAS/Picatinny Rail Systems. These mounts are High Profile, which means they will hold your Optic a little higher than standard, which is ideal for those who use Lower Face Protection and struggle to aim down their Scope. Being a two-piece design, and coming included with an Allen Key, they are very easy to install.

23.49
  • Red/Green Dot
  • 5 x Brightness Levels
  • Integrated Rail Mount

A tough and affordable Red Dot Sight for Airsoft Guns that have a 20mm RIS/RAS Accessory Rail. Powered by a CR2032 Battery (included) this Sight offers a Red or Green Target Dot with five brightness levels, and is ready to install onto a Picatinny Rail via the integrated Rail Mount. If you're looking for the finishing touch to your Airsoft Gun and want to improve your target reaction times, then the Theta Optics Red Dot 1x40 Reflex Sight Replica is the perfect way to get started on the ladder of optics.

5.99
  • Fits 25mm Optics
  • For 20mm RIS/RAS
  • High Profile Mounts

A set of two High Profile Scope Mount Rings, which will accept a 25mm Optic and easily install to 20mm RIS/RAS/Picatinny Rail Systems. These mounts are High Profile, which means they will hold your Optic a little higher than standard, which is ideal for those who use Lower Face Protection and struggle to aim down their Scope. Being a two-piece design, and coming included with an Allen Key, they are very easy to install.

5.99
  • Low Profile Rings
  • For 25mm Optics
  • Fits 20mm RIS/RAS

A set of Two Scope Rings for 25mm Optics, which easily attach to 20mm RIS/RAS Rail Systems to install your Rifle Scope on an Airsoft Gun. They have a two piece design which makes installation very easy, and come included with an Allen Key to help. These rings are Low Profile, meaning your Scope will be mounted snugly to your Rail System.

92.99
  • Massive scope
  • Up to 16x zoom!
  • Illuminated Mil-dot reticle

The king of scopes, the 4-16x50 AOE Scope by Theta Optics is ideally suited for sniping and long range spotting. Its massive 50mm objective lens provides excellent image sharpness and a very wide field of view and the reticle illumination function ensures the Mil-Dot crosshair is easy to see in any ambient light level.

5.99
  • Fits 20mm Rails
  • For 30mm Optics
  • High Profile Rings

A set of two High Profile Scope Rings for 30mm Optics, that will easily connect to 20mm RIS/RAS Picatinny Rail Systems. They have a two-piece design which makes installation very easy, and comes included an Alley Key to aid installation. They are High Profile Rings which will hold the Scope higher than standard, making it easier to aim whilst wearing Lower Face Protection.

5.99
  • For 30mm Optics
  • Set of Scope Rings
  • Low Profile Mounting

A set of Alloy constructed Scope Rings for 30mm Optics, that has a 20mm Mount on each ring for easy installation to a 20mm RIS/RAS/Picatinny Rail System. They are Low Profile Rings, which will hold your Optic low against your rail rather than reaching for the sky.

46.49
  • Low Profile Sight
  • 4x Sight Picture Mode
  • Adjustable Brightness

A lightweight and low profile holographic sight which can be adjusted, allowing for four different sight pictures, as well as red and green modes. The sight is constructed entirely from alloy, with a glass Lens and comes with a 20mm RIS / RAS mount.

40.99
  • Mirrored Lens
  • Variable Brightness
  • Integrated 20mm Mount

A compact Red Dot Sight for Airsoft Guns with a 20mm RIS/RAS Rail System, that has a Mirrored Silver Lens and offers Variable Dot Brightness and Colour, to improve your target acquisition and time-to-target.

34.99
  • Compact red / green dot
  • 7 brightness settings per colour
  • 20mm integrated low-profile mount

Theta Optics have outdone themselves once again with this low profile red/green dot sight. With 7 brightness settings per colour that's easily adjusted between the two colours, you can make sure you have sight on the enemy no mater the lighting conditions.

197.49
  • Alloy construction
  • 1 or 4 x Magnification
  • Illuminated rangefinding reticle

Whether you're building an L85A3 or looking for a posh optic to top off your MK18 MOD.1 build, the Theta Optics 1-4x32 ELCAN Specter DR Scope Replica is what you need. This optic is a detailed replica of the real steel ELCAN SpecterDR optic, a fixed-power combat optic able to be quickly switched from 4x to 1x magnification. The ELCAN SpecterDR also formed the basis for the British Army-issued Lightweight Day Sight (LDS) and looks almost identical, making it a fantastic stand-in for your Squaddie loadout. 

The Theta Optics ELCAN Specter DR Replica also boasts an illuminated rangefinding reticle, providing 11 levels of brightness adjustment, red illumination and the ability to compensate for BB drop when taking long-range shots using the reticle itself, with no guesswork and no need to adjust the dials. 

The unit is powered by a single CR1620 button cell (not included) but can also be used unpowered and is equipped with a 20mm Picatinny QD mount, meaning you can switch between platforms in an instant with minimal setup time. If you need a highly flexible sight ideal for use on assault rifles and LMGs thanks to its wide field of view, the Theta Optics 1-4x32 ELCAN Specter DR Scope Replica will serve you well!

9.49
  • Protects ACOG
  • 35mm Diameter
  • Honeycomb Mesh

A 35mm Mesh Kill Flash designed for use on Airsoft ACOG Style Scopes & Optics.

86.99
  • Fully Adjustable
  • 4x Magnification
  • Tough Rubber Armour

An Airsoft replica of the ELCAN Specter M145C scope, designed to fit on 20mm RIS rails and featuring a tough rubber housing, easy access adjustments, a pair of backup iron sights and a 4x magnification.

About Theta Optics

Theta Optics is one of the main names in affordable Airsoft sights and scopes, with a huge array of quality optics and mounting apparatus available in several styles. These include EO-style sights, T1 sights, RMR-style micro red dot sights, ACOG replicas and sniper scopes with variable zoom. Theta Optics usually include scope mounts and batteries with its scopes and red dots, giving you one less thing to worry about buying!

No matter which Airsoft Gun you use, Theta Optics has something to suit your loadout, given its huge array of different optics. The Theta Optics range is our favourite when it comes to budget red dot sights, offering a level of quality and functionality rarely found for so cheap. Read our Top 5 Budget Red Dot Sights article for more info!

Ranging from red dot reflex sights for CQB skirmishers to illuminated scopes for Snipers and long range, Theta Optics gives you a superior level of choice, all built with quality and Airsoft skirmishing at the forefront.